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wil6210: fix beamforming data reporting
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / wmi.c
1 /*
2 * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/etherdevice.h>
18 #include <linux/if_arp.h>
19
20 #include "wil6210.h"
21 #include "txrx.h"
22 #include "wmi.h"
23 #include "trace.h"
24
25 /**
26 * WMI event receiving - theory of operations
27 *
28 * When firmware about to report WMI event, it fills memory area
29 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
30 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
31 *
32 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
33 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
34 * and handles events within the @wmi_event_worker. Every event get detached
35 * from list, processed and deleted.
36 *
37 * Purpose for this mechanism is to release IRQ thread; otherwise,
38 * if WMI event handling involves another WMI command flow, this 2-nd flow
39 * won't be completed because of blocked IRQ thread.
40 */
41
42 /**
43 * Addressing - theory of operations
44 *
45 * There are several buses present on the WIL6210 card.
46 * Same memory areas are visible at different address on
47 * the different busses. There are 3 main bus masters:
48 * - MAC CPU (ucode)
49 * - User CPU (firmware)
50 * - AHB (host)
51 *
52 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
53 * AHB addresses starting from 0x880000
54 *
55 * Internally, firmware uses addresses that allows faster access but
56 * are invisible from the host. To read from these addresses, alternative
57 * AHB address must be used.
58 *
59 * Memory mapping
60 * Linker address PCI/Host address
61 * 0x880000 .. 0xa80000 2Mb BAR0
62 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
63 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
64 */
65
66 /**
67 * @fw_mapping provides memory remapping table
68 *
69 * array size should be in sync with the declaration in the wil6210.h
70 */
71 const struct fw_map fw_mapping[] = {
72 {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM 256k */
73 {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM 32k */
74 {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */
75 {0x880000, 0x88a000, 0x880000, "rgf"}, /* various RGF 40k */
76 {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table 4k */
77 {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf 4k */
78 {0x8c0000, 0x949000, 0x8c0000, "upper"}, /* upper area 548k */
79 /*
80 * 920000..930000 ucode code RAM
81 * 930000..932000 ucode data RAM
82 * 932000..949000 back-door debug data
83 */
84 };
85
86 /**
87 * return AHB address for given firmware/ucode internal (linker) address
88 * @x - internal address
89 * If address have no valid AHB mapping, return 0
90 */
91 static u32 wmi_addr_remap(u32 x)
92 {
93 uint i;
94
95 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
96 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
97 return x + fw_mapping[i].host - fw_mapping[i].from;
98 }
99
100 return 0;
101 }
102
103 /**
104 * Check address validity for WMI buffer; remap if needed
105 * @ptr - internal (linker) fw/ucode address
106 *
107 * Valid buffer should be DWORD aligned
108 *
109 * return address for accessing buffer from the host;
110 * if buffer is not valid, return NULL.
111 */
112 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
113 {
114 u32 off;
115 u32 ptr = le32_to_cpu(ptr_);
116
117 if (ptr % 4)
118 return NULL;
119
120 ptr = wmi_addr_remap(ptr);
121 if (ptr < WIL6210_FW_HOST_OFF)
122 return NULL;
123
124 off = HOSTADDR(ptr);
125 if (off > WIL6210_MEM_SIZE - 4)
126 return NULL;
127
128 return wil->csr + off;
129 }
130
131 /**
132 * Check address validity
133 */
134 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
135 {
136 u32 off;
137
138 if (ptr % 4)
139 return NULL;
140
141 if (ptr < WIL6210_FW_HOST_OFF)
142 return NULL;
143
144 off = HOSTADDR(ptr);
145 if (off > WIL6210_MEM_SIZE - 4)
146 return NULL;
147
148 return wil->csr + off;
149 }
150
151 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
152 struct wil6210_mbox_hdr *hdr)
153 {
154 void __iomem *src = wmi_buffer(wil, ptr);
155 if (!src)
156 return -EINVAL;
157
158 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
159
160 return 0;
161 }
162
163 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
164 {
165 struct {
166 struct wil6210_mbox_hdr hdr;
167 struct wil6210_mbox_hdr_wmi wmi;
168 } __packed cmd = {
169 .hdr = {
170 .type = WIL_MBOX_HDR_TYPE_WMI,
171 .flags = 0,
172 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
173 },
174 .wmi = {
175 .mid = 0,
176 .id = cpu_to_le16(cmdid),
177 },
178 };
179 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
180 struct wil6210_mbox_ring_desc d_head;
181 u32 next_head;
182 void __iomem *dst;
183 void __iomem *head = wmi_addr(wil, r->head);
184 uint retry;
185
186 if (sizeof(cmd) + len > r->entry_size) {
187 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
188 (int)(sizeof(cmd) + len), r->entry_size);
189 return -ERANGE;
190 }
191
192 might_sleep();
193
194 if (!test_bit(wil_status_fwready, &wil->status)) {
195 wil_err(wil, "WMI: cannot send command while FW not ready\n");
196 return -EAGAIN;
197 }
198
199 if (!head) {
200 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
201 return -EINVAL;
202 }
203 /* read Tx head till it is not busy */
204 for (retry = 5; retry > 0; retry--) {
205 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
206 if (d_head.sync == 0)
207 break;
208 msleep(20);
209 }
210 if (d_head.sync != 0) {
211 wil_err(wil, "WMI head busy\n");
212 return -EBUSY;
213 }
214 /* next head */
215 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
216 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
217 /* wait till FW finish with previous command */
218 for (retry = 5; retry > 0; retry--) {
219 r->tail = ioread32(wil->csr + HOST_MBOX +
220 offsetof(struct wil6210_mbox_ctl, tx.tail));
221 if (next_head != r->tail)
222 break;
223 msleep(20);
224 }
225 if (next_head == r->tail) {
226 wil_err(wil, "WMI ring full\n");
227 return -EBUSY;
228 }
229 dst = wmi_buffer(wil, d_head.addr);
230 if (!dst) {
231 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
232 le32_to_cpu(d_head.addr));
233 return -EINVAL;
234 }
235 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
236 /* set command */
237 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
238 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
239 sizeof(cmd), true);
240 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
241 len, true);
242 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
243 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
244 /* mark entry as full */
245 iowrite32(1, wil->csr + HOSTADDR(r->head) +
246 offsetof(struct wil6210_mbox_ring_desc, sync));
247 /* advance next ptr */
248 iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
249 offsetof(struct wil6210_mbox_ctl, tx.head));
250
251 trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
252
253 /* interrupt to FW */
254 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT);
255
256 return 0;
257 }
258
259 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
260 {
261 int rc;
262
263 mutex_lock(&wil->wmi_mutex);
264 rc = __wmi_send(wil, cmdid, buf, len);
265 mutex_unlock(&wil->wmi_mutex);
266
267 return rc;
268 }
269
270 /*=== Event handlers ===*/
271 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
272 {
273 struct net_device *ndev = wil_to_ndev(wil);
274 struct wireless_dev *wdev = wil->wdev;
275 struct wmi_ready_event *evt = d;
276 wil->fw_version = le32_to_cpu(evt->sw_version);
277 wil->n_mids = evt->numof_additional_mids;
278
279 wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
280 evt->mac, wil->n_mids);
281
282 if (!is_valid_ether_addr(ndev->dev_addr)) {
283 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
284 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
285 }
286 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
287 "%d", wil->fw_version);
288 }
289
290 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
291 int len)
292 {
293 wil_dbg_wmi(wil, "WMI: got FW ready event\n");
294
295 set_bit(wil_status_fwready, &wil->status);
296 /* reuse wmi_ready for the firmware ready indication */
297 complete(&wil->wmi_ready);
298 }
299
300 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
301 {
302 struct wmi_rx_mgmt_packet_event *data = d;
303 struct wiphy *wiphy = wil_to_wiphy(wil);
304 struct ieee80211_mgmt *rx_mgmt_frame =
305 (struct ieee80211_mgmt *)data->payload;
306 int ch_no = data->info.channel+1;
307 u32 freq = ieee80211_channel_to_frequency(ch_no,
308 IEEE80211_BAND_60GHZ);
309 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
310 s32 signal = data->info.sqi;
311 __le16 fc = rx_mgmt_frame->frame_control;
312 u32 d_len = le32_to_cpu(data->info.len);
313 u16 d_status = le16_to_cpu(data->info.status);
314
315 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d SQI %d%%\n",
316 data->info.channel, data->info.mcs, data->info.snr,
317 data->info.sqi);
318 wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
319 le16_to_cpu(fc));
320 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
321 data->info.qid, data->info.mid, data->info.cid);
322
323 if (!channel) {
324 wil_err(wil, "Frame on unsupported channel\n");
325 return;
326 }
327
328 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
329 struct cfg80211_bss *bss;
330 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
331 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
332 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
333 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
334 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
335 u.beacon.variable);
336 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
337 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
338 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
339 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
340 ie_len, true);
341
342 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
343 d_len, signal, GFP_KERNEL);
344 if (bss) {
345 wil_dbg_wmi(wil, "Added BSS %pM\n",
346 rx_mgmt_frame->bssid);
347 cfg80211_put_bss(wiphy, bss);
348 } else {
349 wil_err(wil, "cfg80211_inform_bss() failed\n");
350 }
351 } else {
352 cfg80211_rx_mgmt(wil->wdev, freq, signal,
353 (void *)rx_mgmt_frame, d_len, 0, GFP_KERNEL);
354 }
355 }
356
357 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
358 void *d, int len)
359 {
360 if (wil->scan_request) {
361 struct wmi_scan_complete_event *data = d;
362 bool aborted = (data->status != WMI_SCAN_SUCCESS);
363
364 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
365 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
366 wil->scan_request, aborted);
367
368 del_timer_sync(&wil->scan_timer);
369 cfg80211_scan_done(wil->scan_request, aborted);
370 wil->scan_request = NULL;
371 } else {
372 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
373 }
374 }
375
376 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
377 {
378 struct net_device *ndev = wil_to_ndev(wil);
379 struct wireless_dev *wdev = wil->wdev;
380 struct wmi_connect_event *evt = d;
381 int ch; /* channel number */
382 struct station_info sinfo;
383 u8 *assoc_req_ie, *assoc_resp_ie;
384 size_t assoc_req_ielen, assoc_resp_ielen;
385 /* capinfo(u16) + listen_interval(u16) + IEs */
386 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
387 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
388 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
389
390 if (len < sizeof(*evt)) {
391 wil_err(wil, "Connect event too short : %d bytes\n", len);
392 return;
393 }
394 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
395 evt->assoc_resp_len) {
396 wil_err(wil,
397 "Connect event corrupted : %d != %d + %d + %d + %d\n",
398 len, (int)sizeof(*evt), evt->beacon_ie_len,
399 evt->assoc_req_len, evt->assoc_resp_len);
400 return;
401 }
402 if (evt->cid >= WIL6210_MAX_CID) {
403 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
404 return;
405 }
406
407 ch = evt->channel + 1;
408 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
409 evt->bssid, ch, evt->cid);
410 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
411 evt->assoc_info, len - sizeof(*evt), true);
412
413 /* figure out IE's */
414 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
415 assoc_req_ie_offset];
416 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
417 if (evt->assoc_req_len <= assoc_req_ie_offset) {
418 assoc_req_ie = NULL;
419 assoc_req_ielen = 0;
420 }
421
422 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
423 evt->assoc_req_len +
424 assoc_resp_ie_offset];
425 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
426 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
427 assoc_resp_ie = NULL;
428 assoc_resp_ielen = 0;
429 }
430
431 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
432 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
433 if (!test_bit(wil_status_fwconnecting, &wil->status)) {
434 wil_err(wil, "Not in connecting state\n");
435 return;
436 }
437 del_timer_sync(&wil->connect_timer);
438 cfg80211_connect_result(ndev, evt->bssid,
439 assoc_req_ie, assoc_req_ielen,
440 assoc_resp_ie, assoc_resp_ielen,
441 WLAN_STATUS_SUCCESS, GFP_KERNEL);
442
443 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
444 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
445 memset(&sinfo, 0, sizeof(sinfo));
446
447 sinfo.generation = wil->sinfo_gen++;
448
449 if (assoc_req_ie) {
450 sinfo.assoc_req_ies = assoc_req_ie;
451 sinfo.assoc_req_ies_len = assoc_req_ielen;
452 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
453 }
454
455 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
456 }
457 clear_bit(wil_status_fwconnecting, &wil->status);
458 set_bit(wil_status_fwconnected, &wil->status);
459
460 /* FIXME FW can transmit only ucast frames to peer */
461 /* FIXME real ring_id instead of hard coded 0 */
462 memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN);
463 wil->sta[evt->cid].status = wil_sta_conn_pending;
464
465 wil->pending_connect_cid = evt->cid;
466 queue_work(wil->wmi_wq_conn, &wil->connect_worker);
467 }
468
469 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
470 void *d, int len)
471 {
472 struct wmi_disconnect_event *evt = d;
473
474 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
475 evt->bssid,
476 evt->protocol_reason_status, evt->disconnect_reason);
477
478 wil->sinfo_gen++;
479
480 mutex_lock(&wil->mutex);
481 wil6210_disconnect(wil, evt->bssid);
482 mutex_unlock(&wil->mutex);
483 }
484
485 /*
486 * Firmware reports EAPOL frame using WME event.
487 * Reconstruct Ethernet frame and deliver it via normal Rx
488 */
489 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
490 void *d, int len)
491 {
492 struct net_device *ndev = wil_to_ndev(wil);
493 struct wmi_eapol_rx_event *evt = d;
494 u16 eapol_len = le16_to_cpu(evt->eapol_len);
495 int sz = eapol_len + ETH_HLEN;
496 struct sk_buff *skb;
497 struct ethhdr *eth;
498 int cid;
499 struct wil_net_stats *stats = NULL;
500
501 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
502 evt->src_mac);
503
504 cid = wil_find_cid(wil, evt->src_mac);
505 if (cid >= 0)
506 stats = &wil->sta[cid].stats;
507
508 if (eapol_len > 196) { /* TODO: revisit size limit */
509 wil_err(wil, "EAPOL too large\n");
510 return;
511 }
512
513 skb = alloc_skb(sz, GFP_KERNEL);
514 if (!skb) {
515 wil_err(wil, "Failed to allocate skb\n");
516 return;
517 }
518
519 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
520 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
521 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
522 eth->h_proto = cpu_to_be16(ETH_P_PAE);
523 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
524 skb->protocol = eth_type_trans(skb, ndev);
525 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
526 ndev->stats.rx_packets++;
527 ndev->stats.rx_bytes += sz;
528 if (stats) {
529 stats->rx_packets++;
530 stats->rx_bytes += sz;
531 }
532 } else {
533 ndev->stats.rx_dropped++;
534 if (stats)
535 stats->rx_dropped++;
536 }
537 }
538
539 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
540 {
541 struct net_device *ndev = wil_to_ndev(wil);
542 struct wmi_data_port_open_event *evt = d;
543 u8 cid = evt->cid;
544
545 wil_dbg_wmi(wil, "Link UP for CID %d\n", cid);
546
547 if (cid >= ARRAY_SIZE(wil->sta)) {
548 wil_err(wil, "Link UP for invalid CID %d\n", cid);
549 return;
550 }
551
552 wil->sta[cid].data_port_open = true;
553 netif_carrier_on(ndev);
554 }
555
556 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
557 {
558 struct net_device *ndev = wil_to_ndev(wil);
559 struct wmi_wbe_link_down_event *evt = d;
560 u8 cid = evt->cid;
561
562 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
563 cid, le32_to_cpu(evt->reason));
564
565 if (cid >= ARRAY_SIZE(wil->sta)) {
566 wil_err(wil, "Link DOWN for invalid CID %d\n", cid);
567 return;
568 }
569
570 wil->sta[cid].data_port_open = false;
571 netif_carrier_off(ndev);
572 }
573
574 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
575 int len)
576 {
577 struct wmi_vring_ba_status_event *evt = d;
578 struct wil_sta_info *sta;
579 uint i, cid;
580
581 /* TODO: use Rx BA status, not Tx one */
582
583 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
584 evt->ringid,
585 evt->status == WMI_BA_AGREED ? "OK" : "N/A",
586 evt->agg_wsize, __le16_to_cpu(evt->ba_timeout));
587
588 if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
589 wil_err(wil, "invalid ring id %d\n", evt->ringid);
590 return;
591 }
592
593 cid = wil->vring2cid_tid[evt->ringid][0];
594 if (cid >= WIL6210_MAX_CID) {
595 wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid);
596 return;
597 }
598
599 sta = &wil->sta[cid];
600 if (sta->status == wil_sta_unused) {
601 wil_err(wil, "CID %d unused\n", cid);
602 return;
603 }
604
605 wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr);
606 for (i = 0; i < WIL_STA_TID_NUM; i++) {
607 struct wil_tid_ampdu_rx *r = sta->tid_rx[i];
608 sta->tid_rx[i] = NULL;
609 wil_tid_ampdu_rx_free(wil, r);
610 if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize)
611 sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil,
612 evt->agg_wsize, 0);
613 }
614 }
615
616 static const struct {
617 int eventid;
618 void (*handler)(struct wil6210_priv *wil, int eventid,
619 void *data, int data_len);
620 } wmi_evt_handlers[] = {
621 {WMI_READY_EVENTID, wmi_evt_ready},
622 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
623 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
624 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
625 {WMI_CONNECT_EVENTID, wmi_evt_connect},
626 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
627 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
628 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup},
629 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown},
630 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
631 };
632
633 /*
634 * Run in IRQ context
635 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
636 * that will be eventually handled by the @wmi_event_worker in the thread
637 * context of thread "wil6210_wmi"
638 */
639 void wmi_recv_cmd(struct wil6210_priv *wil)
640 {
641 struct wil6210_mbox_ring_desc d_tail;
642 struct wil6210_mbox_hdr hdr;
643 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
644 struct pending_wmi_event *evt;
645 u8 *cmd;
646 void __iomem *src;
647 ulong flags;
648 unsigned n;
649
650 if (!test_bit(wil_status_reset_done, &wil->status)) {
651 wil_err(wil, "Reset not completed\n");
652 return;
653 }
654
655 for (n = 0;; n++) {
656 u16 len;
657 bool q;
658
659 r->head = ioread32(wil->csr + HOST_MBOX +
660 offsetof(struct wil6210_mbox_ctl, rx.head));
661 if (r->tail == r->head)
662 break;
663
664 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
665 r->head, r->tail);
666 /* read cmd descriptor from tail */
667 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
668 sizeof(struct wil6210_mbox_ring_desc));
669 if (d_tail.sync == 0) {
670 wil_err(wil, "Mbox evt not owned by FW?\n");
671 break;
672 }
673
674 /* read cmd header from descriptor */
675 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
676 wil_err(wil, "Mbox evt at 0x%08x?\n",
677 le32_to_cpu(d_tail.addr));
678 break;
679 }
680 len = le16_to_cpu(hdr.len);
681 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
682 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
683 hdr.flags);
684
685 /* read cmd buffer from descriptor */
686 src = wmi_buffer(wil, d_tail.addr) +
687 sizeof(struct wil6210_mbox_hdr);
688 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
689 event.wmi) + len, 4),
690 GFP_KERNEL);
691 if (!evt)
692 break;
693
694 evt->event.hdr = hdr;
695 cmd = (void *)&evt->event.wmi;
696 wil_memcpy_fromio_32(cmd, src, len);
697 /* mark entry as empty */
698 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
699 offsetof(struct wil6210_mbox_ring_desc, sync));
700 /* indicate */
701 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
702 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
703 struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
704 u16 id = le16_to_cpu(wmi->id);
705 u32 tstamp = le32_to_cpu(wmi->timestamp);
706 wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
707 id, wmi->mid, tstamp);
708 trace_wil6210_wmi_event(wmi, &wmi[1],
709 len - sizeof(*wmi));
710 }
711 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
712 &evt->event.hdr, sizeof(hdr) + len, true);
713
714 /* advance tail */
715 r->tail = r->base + ((r->tail - r->base +
716 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
717 iowrite32(r->tail, wil->csr + HOST_MBOX +
718 offsetof(struct wil6210_mbox_ctl, rx.tail));
719
720 /* add to the pending list */
721 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
722 list_add_tail(&evt->list, &wil->pending_wmi_ev);
723 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
724 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
725 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
726 }
727 /* normally, 1 event per IRQ should be processed */
728 wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n);
729 }
730
731 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
732 u16 reply_id, void *reply, u8 reply_size, int to_msec)
733 {
734 int rc;
735 int remain;
736
737 mutex_lock(&wil->wmi_mutex);
738
739 rc = __wmi_send(wil, cmdid, buf, len);
740 if (rc)
741 goto out;
742
743 wil->reply_id = reply_id;
744 wil->reply_buf = reply;
745 wil->reply_size = reply_size;
746 remain = wait_for_completion_timeout(&wil->wmi_ready,
747 msecs_to_jiffies(to_msec));
748 if (0 == remain) {
749 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
750 cmdid, reply_id, to_msec);
751 rc = -ETIME;
752 } else {
753 wil_dbg_wmi(wil,
754 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
755 cmdid, reply_id,
756 to_msec - jiffies_to_msecs(remain));
757 }
758 wil->reply_id = 0;
759 wil->reply_buf = NULL;
760 wil->reply_size = 0;
761 out:
762 mutex_unlock(&wil->wmi_mutex);
763
764 return rc;
765 }
766
767 int wmi_echo(struct wil6210_priv *wil)
768 {
769 struct wmi_echo_cmd cmd = {
770 .value = cpu_to_le32(0x12345678),
771 };
772
773 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
774 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
775 }
776
777 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
778 {
779 struct wmi_set_mac_address_cmd cmd;
780
781 memcpy(cmd.mac, addr, ETH_ALEN);
782
783 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
784
785 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
786 }
787
788 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
789 {
790 int rc;
791
792 struct wmi_pcp_start_cmd cmd = {
793 .bcon_interval = cpu_to_le16(bi),
794 .network_type = wmi_nettype,
795 .disable_sec_offload = 1,
796 .channel = chan - 1,
797 .pcp_max_assoc_sta = WIL6210_MAX_CID,
798 };
799 struct {
800 struct wil6210_mbox_hdr_wmi wmi;
801 struct wmi_pcp_started_event evt;
802 } __packed reply;
803
804 if (!wil->secure_pcp)
805 cmd.disable_sec = 1;
806
807 /*
808 * Processing time may be huge, in case of secure AP it takes about
809 * 3500ms for FW to start AP
810 */
811 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
812 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
813 if (rc)
814 return rc;
815
816 if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
817 rc = -EINVAL;
818
819 return rc;
820 }
821
822 int wmi_pcp_stop(struct wil6210_priv *wil)
823 {
824 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
825 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
826 }
827
828 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
829 {
830 struct wmi_set_ssid_cmd cmd = {
831 .ssid_len = cpu_to_le32(ssid_len),
832 };
833
834 if (ssid_len > sizeof(cmd.ssid))
835 return -EINVAL;
836
837 memcpy(cmd.ssid, ssid, ssid_len);
838
839 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
840 }
841
842 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
843 {
844 int rc;
845 struct {
846 struct wil6210_mbox_hdr_wmi wmi;
847 struct wmi_set_ssid_cmd cmd;
848 } __packed reply;
849 int len; /* reply.cmd.ssid_len in CPU order */
850
851 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
852 &reply, sizeof(reply), 20);
853 if (rc)
854 return rc;
855
856 len = le32_to_cpu(reply.cmd.ssid_len);
857 if (len > sizeof(reply.cmd.ssid))
858 return -EINVAL;
859
860 *ssid_len = len;
861 memcpy(ssid, reply.cmd.ssid, len);
862
863 return 0;
864 }
865
866 int wmi_set_channel(struct wil6210_priv *wil, int channel)
867 {
868 struct wmi_set_pcp_channel_cmd cmd = {
869 .channel = channel - 1,
870 };
871
872 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
873 }
874
875 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
876 {
877 int rc;
878 struct {
879 struct wil6210_mbox_hdr_wmi wmi;
880 struct wmi_set_pcp_channel_cmd cmd;
881 } __packed reply;
882
883 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
884 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
885 if (rc)
886 return rc;
887
888 if (reply.cmd.channel > 3)
889 return -EINVAL;
890
891 *channel = reply.cmd.channel + 1;
892
893 return 0;
894 }
895
896 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
897 {
898 struct wmi_p2p_cfg_cmd cmd = {
899 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
900 .channel = channel - 1,
901 };
902
903 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
904 }
905
906 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
907 const void *mac_addr)
908 {
909 struct wmi_delete_cipher_key_cmd cmd = {
910 .key_index = key_index,
911 };
912
913 if (mac_addr)
914 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
915
916 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
917 }
918
919 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
920 const void *mac_addr, int key_len, const void *key)
921 {
922 struct wmi_add_cipher_key_cmd cmd = {
923 .key_index = key_index,
924 .key_usage = WMI_KEY_USE_PAIRWISE,
925 .key_len = key_len,
926 };
927
928 if (!key || (key_len > sizeof(cmd.key)))
929 return -EINVAL;
930
931 memcpy(cmd.key, key, key_len);
932 if (mac_addr)
933 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
934
935 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
936 }
937
938 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
939 {
940 int rc;
941 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
942 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
943 if (!cmd)
944 return -ENOMEM;
945
946 cmd->mgmt_frm_type = type;
947 /* BUG: FW API define ieLen as u8. Will fix FW */
948 cmd->ie_len = cpu_to_le16(ie_len);
949 memcpy(cmd->ie_info, ie, ie_len);
950 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
951 kfree(cmd);
952
953 return rc;
954 }
955
956 /**
957 * wmi_rxon - turn radio on/off
958 * @on: turn on if true, off otherwise
959 *
960 * Only switch radio. Channel should be set separately.
961 * No timeout for rxon - radio turned on forever unless some other call
962 * turns it off
963 */
964 int wmi_rxon(struct wil6210_priv *wil, bool on)
965 {
966 int rc;
967 struct {
968 struct wil6210_mbox_hdr_wmi wmi;
969 struct wmi_listen_started_event evt;
970 } __packed reply;
971
972 wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
973
974 if (on) {
975 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
976 WMI_LISTEN_STARTED_EVENTID,
977 &reply, sizeof(reply), 100);
978 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
979 rc = -EINVAL;
980 } else {
981 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
982 WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
983 }
984
985 return rc;
986 }
987
988 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
989 {
990 struct wireless_dev *wdev = wil->wdev;
991 struct net_device *ndev = wil_to_ndev(wil);
992 struct wmi_cfg_rx_chain_cmd cmd = {
993 .action = WMI_RX_CHAIN_ADD,
994 .rx_sw_ring = {
995 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
996 .ring_mem_base = cpu_to_le64(vring->pa),
997 .ring_size = cpu_to_le16(vring->size),
998 },
999 .mid = 0, /* TODO - what is it? */
1000 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1001 .reorder_type = WMI_RX_SW_REORDER,
1002 };
1003 struct {
1004 struct wil6210_mbox_hdr_wmi wmi;
1005 struct wmi_cfg_rx_chain_done_event evt;
1006 } __packed evt;
1007 int rc;
1008
1009 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1010 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1011
1012 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1013 if (ch)
1014 cmd.sniffer_cfg.channel = ch->hw_value - 1;
1015 cmd.sniffer_cfg.phy_info_mode =
1016 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1017 cmd.sniffer_cfg.phy_support =
1018 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1019 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
1020 } else {
1021 /* Initialize offload (in non-sniffer mode).
1022 * Linux IP stack always calculates IP checksum
1023 * HW always calculate TCP/UDP checksum
1024 */
1025 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1026 }
1027 /* typical time for secure PCP is 840ms */
1028 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1029 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1030 if (rc)
1031 return rc;
1032
1033 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1034
1035 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1036 le32_to_cpu(evt.evt.status), vring->hwtail);
1037
1038 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1039 rc = -EINVAL;
1040
1041 return rc;
1042 }
1043
1044 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r)
1045 {
1046 int rc;
1047 struct wmi_temp_sense_cmd cmd = {
1048 .measure_marlon_m_en = cpu_to_le32(!!t_m),
1049 .measure_marlon_r_en = cpu_to_le32(!!t_r),
1050 };
1051 struct {
1052 struct wil6210_mbox_hdr_wmi wmi;
1053 struct wmi_temp_sense_done_event evt;
1054 } __packed reply;
1055
1056 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1057 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1058 if (rc)
1059 return rc;
1060
1061 if (t_m)
1062 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000);
1063 if (t_r)
1064 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000);
1065
1066 return 0;
1067 }
1068
1069 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason)
1070 {
1071 struct wmi_disconnect_sta_cmd cmd = {
1072 .disconnect_reason = cpu_to_le16(reason),
1073 };
1074 memcpy(cmd.dst_mac, mac, ETH_ALEN);
1075
1076 wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1077
1078 return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd));
1079 }
1080
1081 void wmi_event_flush(struct wil6210_priv *wil)
1082 {
1083 struct pending_wmi_event *evt, *t;
1084
1085 wil_dbg_wmi(wil, "%s()\n", __func__);
1086
1087 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1088 list_del(&evt->list);
1089 kfree(evt);
1090 }
1091 }
1092
1093 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1094 void *d, int len)
1095 {
1096 uint i;
1097
1098 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1099 if (wmi_evt_handlers[i].eventid == id) {
1100 wmi_evt_handlers[i].handler(wil, id, d, len);
1101 return true;
1102 }
1103 }
1104
1105 return false;
1106 }
1107
1108 static void wmi_event_handle(struct wil6210_priv *wil,
1109 struct wil6210_mbox_hdr *hdr)
1110 {
1111 u16 len = le16_to_cpu(hdr->len);
1112
1113 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1114 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1115 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1116 void *evt_data = (void *)(&wmi[1]);
1117 u16 id = le16_to_cpu(wmi->id);
1118 /* check if someone waits for this event */
1119 if (wil->reply_id && wil->reply_id == id) {
1120 if (wil->reply_buf) {
1121 memcpy(wil->reply_buf, wmi,
1122 min(len, wil->reply_size));
1123 } else {
1124 wmi_evt_call_handler(wil, id, evt_data,
1125 len - sizeof(*wmi));
1126 }
1127 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1128 complete(&wil->wmi_ready);
1129 return;
1130 }
1131 /* unsolicited event */
1132 /* search for handler */
1133 if (!wmi_evt_call_handler(wil, id, evt_data,
1134 len - sizeof(*wmi))) {
1135 wil_err(wil, "Unhandled event 0x%04x\n", id);
1136 }
1137 } else {
1138 wil_err(wil, "Unknown event type\n");
1139 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1140 hdr, sizeof(*hdr) + len, true);
1141 }
1142 }
1143
1144 /*
1145 * Retrieve next WMI event from the pending list
1146 */
1147 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1148 {
1149 ulong flags;
1150 struct list_head *ret = NULL;
1151
1152 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1153
1154 if (!list_empty(&wil->pending_wmi_ev)) {
1155 ret = wil->pending_wmi_ev.next;
1156 list_del(ret);
1157 }
1158
1159 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1160
1161 return ret;
1162 }
1163
1164 /*
1165 * Handler for the WMI events
1166 */
1167 void wmi_event_worker(struct work_struct *work)
1168 {
1169 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1170 wmi_event_worker);
1171 struct pending_wmi_event *evt;
1172 struct list_head *lh;
1173
1174 while ((lh = next_wmi_ev(wil)) != NULL) {
1175 evt = list_entry(lh, struct pending_wmi_event, list);
1176 wmi_event_handle(wil, &evt->event.hdr);
1177 kfree(evt);
1178 }
1179 }
Linux kernel - Deliverables
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